@J-No: They were probably hoping for a run of a few yards to give themselves "breathing room" to run different kinds of plays.
A pass play at your own 1-yard line limits the scrambling a quarterback can do (think of the way a quarterback gets width and depth when avoiding a rush) as well as increases the likely-hood of a holding penalty by an offensive lineman, which results in a safety.
I always knew there was something wrong in There's Something About Mary, there is no way Brett is smooth enough to pick up Cameron Diaz without getting some sort of harassment suit against him.